Using multiple levels of an independent variable in single-subject designs presents certain problems because:
A) there are no statistical tests that can be applied to the resulting data.
B) subjects may get tired too quickly to allow for complete replication.
C) only one or a few subjects are tested, and completely counterbalancing the order of treatments across subjects is not usually possible.
D) All of the answers are correct.

Question

Quizplus · Accepted Answer

In single-subject designs, it is challenging to completely counterbalance the order of treatments across subjects due to the limited number of subjects, which can affect the validity of the results.

Using Multiple Levels of an Independent Variable in Single-Subject Designs